agenttesla | 33e3a742107eb1a49e102def535b09f56a0010d656bd17ef2eda2ac257ad4294

General

Target

DOCS.exe
Size

781KB
MD5

c9c32ce8e37b2bbe698073ea6c778de1
SHA1

7bb8e47f9555efffb67128837875252236c9795d
SHA256

4bffa4186f899e3474a07b07fa5caaec795250cfe89d4c24b9369e2da967238f
SHA512

4abdbbfa9a761cf54e7d19a7c21baa9178f39ab38a7db07f12fc530e5ef597b55acfe7819205f70c80e5b8513494d53a4089d200dce16a1b64e45f83779e01b0
SSDEEP

12288:IA6SKo7k7uh50n3u219YVznnMpm4Ai7MxLd/lEWvCPGwqfcJAFrjOKb:IAMo7co56u2nYFMGuM/t4pH

Score

10^/10

agenttesla discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.starmech.net
Port:
587
Username:
[email protected]
Password:
nics123

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.starmech.net
Port:
587
Username:
[email protected]
Password:
nics123
Email To:
[email protected]

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Agenttesla family
agenttesla
Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\BjTxJte = "C:\\Users\\Admin\\AppData\\Roaming\\BjTxJte\\BjTxJte.exe"	DOCS.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
26	api.ipify.org
27	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3916 set thread context of 1168	3916	DOCS.exe	99

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DOCS.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DOCS.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1168	DOCS.exe
1168	DOCS.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1168	DOCS.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1168	DOCS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3916 wrote to memory of 1168	3916	DOCS.exe	99
PID 3916 wrote to memory of 1168	3916	DOCS.exe	99
PID 3916 wrote to memory of 1168	3916	DOCS.exe	99
PID 3916 wrote to memory of 1168	3916	DOCS.exe	99
PID 3916 wrote to memory of 1168	3916	DOCS.exe	99
PID 3916 wrote to memory of 1168	3916	DOCS.exe	99
PID 3916 wrote to memory of 1168	3916	DOCS.exe	99
PID 3916 wrote to memory of 1168	3916	DOCS.exe	99

C:\Users\Admin\AppData\Local\Temp\DOCS.exe
"C:\Users\Admin\AppData\Local\Temp\DOCS.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3916
- C:\Users\Admin\AppData\Local\Temp\DOCS.exe
  "C:\Users\Admin\AppData\Local\Temp\DOCS.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1168

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\DOCS.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
memory/1168-11-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1168-20-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/1168-19-0x0000000006740000-0x0000000006790000-memory.dmp

Filesize
320KB

Download
memory/1168-16-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/1168-17-0x00000000050D0000-0x0000000005136000-memory.dmp

Filesize
408KB

Download
memory/1168-14-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/3916-4-0x00000000052C0000-0x00000000052CA000-memory.dmp

Filesize
40KB

Download
memory/3916-8-0x0000000005520000-0x0000000005532000-memory.dmp

Filesize
72KB

Download
memory/3916-9-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/3916-10-0x00000000067F0000-0x0000000006876000-memory.dmp

Filesize
536KB

Download
memory/3916-7-0x0000000074FBE000-0x0000000074FBF000-memory.dmp

Filesize
4KB

Download
memory/3916-6-0x0000000006A40000-0x0000000006ADC000-memory.dmp

Filesize
624KB

Download
memory/3916-5-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/3916-15-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/3916-0-0x0000000074FBE000-0x0000000074FBF000-memory.dmp

Filesize
4KB

Download
memory/3916-3-0x0000000005300000-0x0000000005392000-memory.dmp

Filesize
584KB

Download
memory/3916-2-0x0000000005980000-0x0000000005F24000-memory.dmp

Filesize
5.6MB

Download
memory/3916-1-0x00000000007F0000-0x00000000008B8000-memory.dmp

Filesize
800KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads